In 2003 the band recorded the first demo called "Demo till hell" and started to play live in mass meetings and pubs. In 2004 the second demo "the day of pain demo...part 1" has been released. In 2005 the release of the first Natrium Cd "The Day of Pain" distributed in Italy, Canada, USA, Brazil, Japan, Korea, Germany, England, Holland, Norway and other countries (about 800 copies). After line-up changes, in 2009 the release of "Inscribed in the victims scars" EP followed by several shows and a tour in the UK. The EP represent a transition phase from the old and the new style. After some changes in the line up the band composed heavier stuff, more technical and brutal, inspired by the masters of american Brutal Death metal and filled with Natrium experimentations